EP0503672A3 - Magnetic digital video signal recording method - Google Patents

Magnetic digital video signal recording method Download PDF

Info

Publication number
EP0503672A3
EP0503672A3 EP19920104416 EP92104416A EP0503672A3 EP 0503672 A3 EP0503672 A3 EP 0503672A3 EP 19920104416 EP19920104416 EP 19920104416 EP 92104416 A EP92104416 A EP 92104416A EP 0503672 A3 EP0503672 A3 EP 0503672A3
Authority
EP
European Patent Office
Prior art keywords
magnetic
digital video
recording medium
data
video signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19920104416
Other versions
EP0503672A2 (en
EP0503672B1 (en
Inventor
Yukari Yamada
Mayumi Abe
Kazunobu Chiba
Yuichi Arisaka
Kenichi Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27281696&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0503672(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sony Corp filed Critical Sony Corp
Publication of EP0503672A2 publication Critical patent/EP0503672A2/en
Publication of EP0503672A3 publication Critical patent/EP0503672A3/en
Application granted granted Critical
Publication of EP0503672B1 publication Critical patent/EP0503672B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
    • G11B5/00847—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks
    • G11B5/0086—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks using cyclically driven heads providing segmented tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73935—Polyester substrates, e.g. polyethylene terephthalate characterised by roughness or surface features, e.g. by added particles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/7824—Television signal recording using magnetic recording on tape with rotating magnetic heads
    • H04N5/7826—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape
    • H04N5/78263—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape for recording on tracks inclined relative to the direction of movement of the tape
    • H04N5/78266—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape for recording on tracks inclined relative to the direction of movement of the tape using more than one track for the recording of one television field or frame, i.e. segmented recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
    • H04N5/9261—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H04N9/8047—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction using transform coding
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Magnetic Record Carriers (AREA)
  • Digital Magnetic Recording (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Thin Magnetic Films (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Paints Or Removers (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

Disclosed is herein a method for magnetically recording digital video signals comprising the steps of: converting (5, 6) input digital video signals into data segmented into blocks each composed of a plurality of pixel data; compression-coding (8) the blocks of pixel data block-by-block; converting (11) the compression-coded data into channel-encoded data; and supplying the channel-encoded data to magnetic heads (13A, 13B) on a rotary drum (76) for recording by such heads on a magnetic recording medium (78) constituted by a nonmagnetic base having thereon a magnetic layer of at least one thin magnetic metal film which has an energy product of at least 75 G.cm.Oe, with the surface roughness of said magnetic recording medium being at most 0.003 mu m in center line average height Ra, and with the surface roughness of said magnetic recording medium being at most 0.04 mu m in ten point average height Rz.
EP19920104416 1991-03-15 1992-03-13 Magnetic recording medium for storing digital video signals Expired - Lifetime EP0503672B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP7677091 1991-03-15
JP76770/91 1991-03-15
JP153440/91 1991-06-25
JP15344091 1991-06-25
JP1714792A JP3104364B2 (en) 1991-03-15 1992-01-31 Magnetic recording method of digital image signal
JP17147/92 1992-01-31

Publications (3)

Publication Number Publication Date
EP0503672A2 EP0503672A2 (en) 1992-09-16
EP0503672A3 true EP0503672A3 (en) 1993-03-17
EP0503672B1 EP0503672B1 (en) 1997-08-06

Family

ID=27281696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920104416 Expired - Lifetime EP0503672B1 (en) 1991-03-15 1992-03-13 Magnetic recording medium for storing digital video signals

Country Status (7)

Country Link
US (1) US5835673A (en)
EP (1) EP0503672B1 (en)
JP (1) JP3104364B2 (en)
KR (1) KR100292587B1 (en)
AT (1) ATE156622T1 (en)
CA (1) CA2063081C (en)
DE (1) DE69221347T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2351407B (en) * 1999-06-21 2003-06-11 Sony Uk Ltd Video data compression
JP2001118212A (en) * 1999-10-14 2001-04-27 Matsushita Electric Ind Co Ltd Magnetic head and magnetic recording and reproducing device
JP2002170217A (en) * 2000-11-29 2002-06-14 Fuji Photo Film Co Ltd Magnetic disk
JP2004362714A (en) * 2003-06-06 2004-12-24 Fuji Photo Film Co Ltd Magnetic recording medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510291A1 (en) * 1981-07-21 1983-01-28 Sony Corp MAGNETIC RECORDING MEDIUM
GB2110117A (en) * 1981-11-27 1983-06-15 Tdk Electronics Co Ltd Magnetic recording medium and signal transfer method
US4548864A (en) * 1982-10-29 1985-10-22 Tdk Corporation Magnetic recording medium having an organic metal underlayer
US5004652A (en) * 1990-08-15 1991-04-02 Hmt Technology Corporation High-coercivity thin-film recording medium and method
EP0469860A2 (en) * 1990-07-30 1992-02-05 Matsushita Electric Industrial Co., Ltd. A digital video signal recording/reproducing apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2760812B2 (en) * 1988-09-28 1998-06-04 株式会社日立製作所 Optical reproducing apparatus and optical reproducing method
US5262877A (en) * 1989-03-03 1993-11-16 Fuji Photo Film Co., Ltd. Image and voice editing system for allowing various images and voices to be reproduced as associated with each other
JP2640268B2 (en) * 1989-03-14 1997-08-13 富士写真フイルム株式会社 Magnetic recording media
JP2969782B2 (en) * 1990-05-09 1999-11-02 ソニー株式会社 Encoded data editing method and encoded data editing device
CA2043670C (en) * 1990-06-05 2002-01-08 Wiebe De Haan Method of transmitting a picture sequence of a full-motion video scene, and a medium for said transmission

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510291A1 (en) * 1981-07-21 1983-01-28 Sony Corp MAGNETIC RECORDING MEDIUM
GB2110117A (en) * 1981-11-27 1983-06-15 Tdk Electronics Co Ltd Magnetic recording medium and signal transfer method
US4548864A (en) * 1982-10-29 1985-10-22 Tdk Corporation Magnetic recording medium having an organic metal underlayer
EP0469860A2 (en) * 1990-07-30 1992-02-05 Matsushita Electric Industrial Co., Ltd. A digital video signal recording/reproducing apparatus
US5004652A (en) * 1990-08-15 1991-04-02 Hmt Technology Corporation High-coercivity thin-film recording medium and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON BROAD- CASTING, vol. BC-33, no. 1, March 1987, New York Y. HASHIMOTO et al. "An Experimental HDTV Digital VTR with a Bit rate of 1188 Gbps", pages 203-209 *

Also Published As

Publication number Publication date
EP0503672A2 (en) 1992-09-16
JP3104364B2 (en) 2000-10-30
DE69221347T2 (en) 1997-11-20
DE69221347D1 (en) 1997-09-11
US5835673A (en) 1998-11-10
CA2063081C (en) 2001-08-28
JPH0589408A (en) 1993-04-09
EP0503672B1 (en) 1997-08-06
KR100292587B1 (en) 2001-06-15
KR920018727A (en) 1992-10-22
CA2063081A1 (en) 1992-09-16
ATE156622T1 (en) 1997-08-15

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